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engram

mcp
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SUMMARY

Privacy-first AI memory layer - Signal for AI Memory. E2EE, local-first, works with Claude, Cursor, and any MCP-compatible AI.

README.md

Engram

Biological memory fades. Digital memory leaks. We fixed both.

website stars license

Website • Quick Start • Features • Security

What is Engram?

An end-to-end encrypted memory layer for AI assistants.

LOCAL BY DEFAULT - Your data lives on your device. No cloud, no servers, no sync unless you ask for it.

ENCRYPTED ALWAYS - AES-256-GCM. Keys never leave your device. 24-word recovery phrase, like a crypto wallet.

ZERO-KNOWLEDGE SYNC - Need multi-device? Opt-in sync encrypts everything client-side. We only see ciphertext. Like Signal, but for AI memory.

OPEN SOURCE - Don't trust us. Verify. Audit the code. Self-host if you want. Fork if we disappear.

Works with Claude Desktop, Claude Code, Cursor, and any MCP-compatible client.

Quick Start

npx engram-core init

Restart your AI client. It remembers you now.

Engram Demo

Features

Feature Description
Local by Default Your data stays on your device. No cloud required.
E2E Encryption AES-256-GCM. Keys never leave your device.
Open Source Audit the code. Self-host. Fork if we disappear.
Semantic Memory Vector similarity search across all your sessions
Secrets Vault Encrypted storage for API keys and credentials
Zero-Knowledge Sync Optional. Client-side encryption. We only see ciphertext.

Architecture

+---------------------------------------------------------------+
|                          AI CLIENTS                           |
|                                                               |
|   +-------------+    +-------------+    +-------------+       |
|   |   Claude    |    |   Cursor    |    |   Claude    |       |
|   |   Desktop   |    |             |    |    Code     |       |
|   +------+------+    +------+------+    +------+------+       |
|          |                  |                  |               |
|          +------------------+------------------+               |
|                             |                                  |
|                             v                                  |
|                  +--------------------+                        |
|                  |    MCP Protocol    |                        |
|                  +---------+----------+                        |
|                            |                                   |
+----------------------------+-----------------------------------+
                             |
                             v
+---------------------------------------------------------------+
|                        ENGRAM SERVER                          |
|                                                               |
|   +-------------+    +-------------+    +-------------+       |
|   |   Memory    |    |   Secrets   |    |   Session   |       |
|   |   Store     |    |   Vault     |    |   Watcher   |       |
|   +-------------+    +-------------+    +-------------+       |
|                                                               |
+----------------------------+----------------------------------+
                             |
                             v
                  +---------------------+
                  |       SQLite        |
                  |     ~/.engram/      |
                  |                     |
                  |   Your data stays   |
                  |     on YOUR disk    |
                  +---------------------+

Security

All encryption uses node:crypto (OpenSSL). No custom cryptography.

Layer Algorithm
At Rest AES-256-GCM
Key Derivation PBKDF2-SHA256 (600k iterations)
Search Index HMAC-SHA256 (blind indexing)
Recovery BIP39 Mnemonic (24 words)

Why Not Cloud Memory?

Engram Cloud Memory
Where's your data? Your device (default) Their servers
Who holds the keys? You They do
Can they read it? No Yes
Can you verify? Yes (open source) No
Cross-app Any MCP client Locked to one app

Philosophy

The AI industry solved intelligence. It forgot about sovereignty.

  • Memory is infrastructure, not a feature
  • Encryption is a right, not a premium tier
  • If you can't export it, you don't own it

Claude Code Agent Teams Integration

Engram integrates with Claude Code Agent Teams through lifecycle hooks. When teams complete tasks or wind down, Engram can automatically consolidate team memories into structured summaries.

How it works:

  • Agents save memories tagged with team:<name> during work
  • Hooks trigger engram consolidate at key moments (task completion, teammate idle)
  • Consolidation categorizes memories into findings, decisions, hypotheses, blockers, and action items
  • Summaries are saved as searchable team-summary memories for future sessions

Configuration (.claude/settings.json):

{
  "hooks": {
    "TaskCompleted": [
      "engram consolidate"
    ],
    "TeammateIdle": [
      "engram consolidate"
    ]
  }
}

You can also run engram consolidate manually to generate team summaries on demand.

Your AI should remember you. Not the other way around.

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